With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ceemHistoryEventIndex
Cisco Embedded Event Manager History Event Index
1.3.6.1.4.1.9.10.134.1.2.3.1.1
A monotonically increasing non-zero integer uniquely identifying a generated event. When it reaches the maximum value, the agent wraps the value back to 1 and may flush all existing entries in the event table.
Back to CISCO-EMBEDDED-EVENT-MGR-MIB MIB page.
IPHost Network monitor allows you to monitor ceemHistoryEventIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.